Fixing cURL error 77: Unable to initialize NSS: -8023 (SEC_ERROR_PKCS11_DEVICE_ERROR)

Out of the blue WordPress starts giving problems. This server has been stable for years.

Clue: It’s CentOS 7. Probably time to move away.

Anyhow, the solution is:

yum reinstall ca-certificates;service php-fpm restart;

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